Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2002-01-10
2003-01-14
Boyer, Charles (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S208000, C510S243000, C510S245000, C510S254000, C510S466000, C510S504000, C510S427000, C106S002000, C106S003000, C106S014310, C106S018120, C106S660000, C106S806000
Reexamination Certificate
active
06506715
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to a composition and method for simultaneously washing and waxing an automotive exterior surface. More particularly, this invention relates to a wash and wax composition comprising a an anionic surfactant, a silicone oil, an amino-functional silicone, a wax, and a cationic emulsifier. The invention also relates to a method of cleaning and polishing an automotive exterior surface utilizing the wash and wax composition.
BACKGROUND OF THE INVENTION
A number of products are available for washing and waxing cars. Leading brand car washing compositions are typically based on blends of anionic surfactants. Anionic surfactants provide excellent foam, good foam stability, and soft lubricious foam. In addition, anionic surfactants provide excellent soil removal and good wetting to automotive exterior surfaces and are easily and uniformly rinsed from the surface with water.
Car wax compositions based on cationic wax or silicone emulsions are known to impart finishes with high gloss, shine, water resistance (beading) and durability. Cationic emulsifiers/surfactants in car wax or sealer waxes provide additional ionic bonding strength to an automotive finish, which holds the wax or silicone-based sealants to the surface better than hydrogen bonding or simple van der Waals forces.
Most car wash formulations require a two step application process. The first stem is applying the wax formulation to the vehicle surface and allowing the wax to dry. The second step involves wiping away excess wax composition and in many cases vigorously buffing the vehicle surface to obtain a uniform, glossy finish.
It is well known that anionic surfactants and cationic surfactants have limited compatibility with each other. Cationic surfactants and anionic surfactants often form insoluble salts with each other, thus causing difficulty in formulating mixed products. For this reason, among others, anionic-based wash compositions and cationic wax compositions are provided as separate products to be applied in separate operations.
There is a need, therefore, for an automotive wash and wax composition that combines the superior cleaning power of an anionic car wash with the superior durability, water resistance and high gloss of a cationic wax composition. In addition, there is a need for automotive wax compositions which impart high gloss, shine, water resistence and durability without the need for buffing of the vehicle surface.
SUMMARY OF THE INVENTION
An automotive wash and wax composition, suitable for simultaneously washing and polishing an automobile exterior surface is a concentrated aqueous silicone-based wax emulsion comprising an anionic surfactant, a silicone oil, such as polydimethylsiloxane, an amino-functional silicone, such as an aminoethylaminopropylsiloxane—dimethylsiloxane copolymer, a wax, such as carnauba wax, and a cationic emulsifier. The automotive wash and wax composition can optionally contain additional components such as UV absorbers, solvents, fragrances, colorants, preservatives, thickening agents, neutralizing agents and stabilizing agents.
The anionic surfactant functions to clean the automotive surface of soil such as dirt and grease. The silicone oil and wax components provide a high-gloss, durable shine to the automotive exterior surface. The amino-functional silicone component of the composition provides strength and durability to the resulting wax and silicone oil film after application to the vehicle surface, while the cationic emulsifier aids in binding the wax and silicone film to the automotive exterior surface.
The automotive wash and wax composition is applied to a prewetted automobile exterior surface with a cloth, sponge or mitt. The composition can be diluted with water prior to application, if desired. After the automotive surface has been coated with the wash and wax composition, the coated surface is dried until a translucent film is formed thereon. After the waxed surface is substantially dry, the waxed surface is rinsed with water. this water rinse substantially removes the anionic surfactant and any soil particles from the surface, as well as the formed translucent film, and leaves behind a wax and silicone-based protective film on the automotive surface. After rinsing, the automotive surface can be towel dried. A uniform, durable, high-gloss protective film is thus obtained, without the need for buffing or additional wiping away of excess polish as is generally required with conventional car wax applications.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
An automotive wash and wax composition, suitable for simultaneously washing and polishing an automobile exterior surface comprises a an aqueous emulsion containing an anionic surfactant, a silicone oil, an amino-functional silicone, a wax, and a cationic emulsifier.
As used herein, the term “silicone” and grammatical variations thereof means a polymer having the general formula (R
n
SiO
((4−n)/2)
)
m
wherein n is between 0 and 3 and m is 2 or greater, and R is alkyl or aryl, as defined in
Silicone Compounds Register and Review
, 5th Edition, R. Anderson, G. L. Larson and C. Smith Eds., Hüls America Inc., Piscataway, N.J., p 247 (1991). Silicones can be linear or branched. The term “amino-functional silicone” and grammatical variations thereof means a silicone as defined above, wherein the alkyl or aryl group is substituted with a primary, secondary or tertiary amino group. The term “silicone-based” as used herein means a material that contains a silicone component.
When referred to herein, the viscosity of a liquid component of the invention is quoted as a kinematic viscosity in centistokes (cSt), measured at 25° C. (77° F.), unless otherwise specified.
In the compositions of the present invention, preferably the anionic surfactant component is present in excess of the cationic emulsifier/surfactant. Optionally, a nonionic surfactant can be can be added to the automotive wash and wax composition of the present invention to aid in solubilizing the anionic/cationic surfactant salts or to enhance the detergency of the formulation.
Anionic, cationic, non-ionic and amphoteric surfactants and emulsifiers useful in the automotive wash and wax composition of the present invention include surfactants and emulsifiers such as described in the review on surfactants by Cahn and Lynn, “Surfactants and Detersive Systems”
Kirk
-
Othmer Encyclopedia of Chemical Technology
, 3 rd Edition, Volume 22, John Wiley & Sons, New York, pp. 332-432 (1983), the relevant disclosures of which are incorporated herein by reference. An extensive listing of anionic, cationic, nonionic and amphoteric surfactants ,and commercial sources thereof, can be found in
McCutcheon's, Volume
1
. Emulsifiers
&
Detergents, North American Edition
, McCutcheon's Division, The Manufacturing Confectioner Publishing Co., Rock Glen, N.J. (2001), the relevant disclosures of which are incorporated herein by reference.
Preferably, the automotive wash and wax composition of the present invention contains about 5 to about 40 weight percent of an anionic surfactant, more preferably about 8 to about 30 weight percent.
Preferred anionic surfactants include an alkylcarboxylate (soap), a polyalkoxycarboxylate, an N-acylsarcosinate, a linear alkylbenzenesulfonate (LAS), an alpha-olefin sulfonate (AOS), a dialkylsulfosuccinate, an alcohol sulfate, and an ethoxylated alcohol sulfate. Combinations of two or more of the aforementioned anionic surfactants are also useful the compositions of the present invention.
Typical alkylcarboxylates (soaps) include sodium, potassium or ammonium salts of C
9
-C
21
, fatty or rosin acids such as lauric acid, palmitic acid, stearic acid, coconut fatty acids, hydrogenated coconut fatty acids, oleic acid, and the like.
Typical polyalkoxycarboxylates include alkoxylated alcohols which have been end-capped with chloroacetate or acrylic acid. Polyalkoxycarboxylates are produced by reaction of ethylene oxide, propylene oxide, or mixtures thereof, with an alcohol, to produce an alkoxyla
Healy Denis John
Schultz Michael A.
Boyer Charles
Olson & Hierl Ltd.
Turtle Wax, Inc.
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